/ Dictionary / Index P penicil: Meaning and Definition of Find definitions for: pen•i•cil Pronunciation: (pen'u-sil), [key] — n. a small, brushlike tuft of hairs, as on a caterpillar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. -penia penicillamine Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language